The Gracar Turn ('Grätzer's Tower') is not recorded in medieval sources, though the historian Valvasor mentions a manor stood on the site in the 14th century, built by the Grätzer family from nearby Gradac, whence its name derives. After passing through numerous hands, it was purchased by Anton Rudež in 1821. The author Janez Trdina was often Rudež's guest at Gracar Turn; several of the former's works were written at the castle, including his best-known, Fables and Tales of the Gorjancers. During World War II part the castle was burned down by partisan fighters. It has since been renovated.
The core of the castle consists of a multi-story residential palacium, surrounded by a rectangular complex anchored by two imposing square towers.
References:The Church of St Donatus name refers to Donatus of Zadar, who began construction on this church in the 9th century and ended it on the northeastern part of the Roman forum. It is the largest Pre-Romanesque building in Croatia.
The beginning of the building of the church was placed to the second half of the 8th century, and it is supposed to have been completed in the 9th century. The Zadar bishop and diplomat Donat (8th and 9th centuries) is credited with the building of the church. He led the representations of the Dalmatian cities to Constantinople and Charles the Great, which is why this church bears slight resemblance to Charlemagne's court chapels, especially the one in Aachen, and also to the Basilica of San Vitale in Ravenna. It belongs to the Pre-Romanesque architectural period.
The circular church, formerly domed, is 27 m high and is characterised by simplicity and technical primitivism.